Regarding Flattr itself, I have always wanted a way
to easily micropay artists, coders, etc online. Especially musicians like
Mosaik!

The way it splits your monthly payment amoung everyone you've Flattr'd that
month is smart; it takes money out of the picture when deciding whether to
click on a Flattr button.

I think it would be more honest, though, if rather than taking 10% of
everything (which would be just absurd and indefensible if this were used
on a large scale, and whiffs faintly of pyramid scheme even now), Flattr
took one share of your monthly payment (as if you automatically Flattr'd
them each month). That would provide even more incentive to Flattr lots of
other things. And if lots of people were Flattring lots of things, Flattr
would still make plenty of money.